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Finding the Fourth Proportional to 4,899.22, 6,762.09 and 3,130.18

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Solution

The fourth proportional to 4,899.22, 6,762.09 and 3,130.18 is: 4,320.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,899.22 : 6,762.09 = 3,130.18 : x
  2. Step 2: Convert to fraction form
    4,899.22/6,762.09 = 3,130.18/x
  3. Step 3: Cross multiply
    4,899.22x = 6,762.09 × 3,130.18
  4. Step 4: Simplify right side
    4,899.22x = 21,166,558.88
  5. Step 5: Solve for x
    x = 21,166,558.88/4,899.22
  6. Step 6: Final answer
    x = 4,320.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.